EP1773556B1 - Concrete saw handle bars - Google Patents
Concrete saw handle bars Download PDFInfo
- Publication number
- EP1773556B1 EP1773556B1 EP05769024.0A EP05769024A EP1773556B1 EP 1773556 B1 EP1773556 B1 EP 1773556B1 EP 05769024 A EP05769024 A EP 05769024A EP 1773556 B1 EP1773556 B1 EP 1773556B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- handle
- frame
- saw
- support
- locking element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
- G05G1/04—Controlling members for hand actuation by pivoting movement, e.g. levers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
- B28D1/045—Sawing grooves in walls; sawing stones from rocks; sawing machines movable on the stones to be cut
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/0906—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges
- E01C23/0926—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters
- E01C23/0933—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters rotary, e.g. circular-saw joint cutters
Description
- The present disclosure relates to equipment that can be maneuvered manually, for example concrete saws having a portion that may be lifted or raised, relative to a surface, using handles or other manual elements at another portion of saw. Such saws may include industrial concrete saws for cutting and grooving concrete slabs.
- In the concrete industry, large slabs of concrete are used to form road beds, building floors and other structures used for its strength and durability. Seams, grooves or other cuts in the concrete may be made in the slabs to form expansion joints, control stress cracks as the slabs cure or to form channels or openings in the slabs to accept other structures. Concrete saws are used to cut the seams, grooves or other openings, and such concrete saws are often very heavy and difficult to move along the concrete slab.
- For large or heavy construction applications, heavy self-propelled saws or other large concrete saws are used. Examples of concrete saws and their construction and operation can be found in a number of patents, including
U.S. patent No. 5,809,985 , entitled "Self-Propelled Saw,"U.S. patent No. 5,743,247 , entitled "Method and Apparatus for Safe Operation of Self-Propelled Concrete Saw,"U.S. Pat No. 5,680,854 , entitled "Self-Propelled Saw,"U.S. Pat No. 5,477,844 , entitled "Slurry Recovery System for a Wet Cutting Saw," andU.S. Pat No. 4,664,645 entitled "Blade Drive Shaft Assembly," all of which are incorporated herein by reference. During setup and operation of the saw, an operator walks behind the saw to control the direction, cutting speed, cutting depth and other operating conditions under which the saw operates. The saw includes one or more wheels allowing the saw to move along the concrete and a frame supported by the wheels on which is mounted a motor or other power supply for operating a saw blade and often for driving one or more wheels to move the saw along the concrete surface. One or more handles extend behind the saw about the level of an operator's hands to allow the operator to manually position the saw. Typically, the saw blade is in the front of the saw and handles extend behind the saw. - For a typical straight cut, the operator aligns the saw blade and often a cutting guide with the intended cutting path. The saw is maneuvered with the saw blade raised above the concrete until the blade and cutting guide are aligned with the cutting path. With the saw blade raised, the orientation of the entire saw is pivoted typically about an axis common to rear drive wheels, and the handles are thereby lowered a corresponding amount. See for example
FIG. 1 in the5,477,844 patent. The entire saw may tilt as much as 30 degrees, pivoting on the rear wheels near the operator. The operator guides the saw travel by lifting and pushing or pulling on handle bars. With the handles lowered, the operator may be stooped over in an uncomfortable position while at the same time trying to maneuver the heavy saw. Maneuvering the saw may often include turning or moving the saw to one side or the other while pushing down or pulling up on the handles or to make easier the positioning of the saw blade. Consequently, the operator's hands change position with the handles often resulting in the operator being stooped over while moving the heavy saw. - Saw handle bars can be repositioned by removing the handle bar from the saw and re-inserting it in a different position that better accommodates the operator's preferences. A handle bar lock mechanism is released to remove the handle bars and tightened after they are repositioned. However, the alternate handle bar position may not be suitable for other operators, depending on the preferences of the operators.
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US 6,019,433 is considered as closest prior art and shows a concrete saw comprising: a frame, a motor supported by the frame and including a drive element; a concrete cutting blade driven by the drive element and supported by the frame; a plurality of wheels coupled to the frame for supporting the frame on a concrete surface; a handle supported by the frame and configured to extend rearward of a rear portion of the frame; a first releasable locking element supported by the frame for releasably holding the handle at a constant length; and a second releasable locking element supported by the frame for releasably holding the handle at a constant variable angle relative to the frame wherein the second releasable locking element is separate from the first releasable locking element. - According to the present invention, a concrete saw as claimed in
claim 1 is provided. The dependent claims define some examples of such a saw. - One or more aspects of the apparatus and methods described herein permit a saw handle to be adjusted. The saw handle can be adjusted in length, and/or the saw handle can be adjusted in angle relative to the rest of the saw. Adjustment of the handle bar height and angle can be made easily and quickly, and adjustments can be made to an infinite or large number of positions within the range of motion of the handle to accommodate the preferences of an operator.
- In one example of the apparatus and methods described herein, a piece of equipment that can be positioned in part through one or more handles, for example a concrete saw, includes a handle having a free end that can be positioned at various positions spaced from the rest of the equipment. For example, a saw handle can be adjustable by increasing or decreasing the overall length of the handle, thereby positioning the free end of the handle further way from or closer to the rest of the saw. In another example, the saw handle can be adjustable by changing the angle of the saw handle relative to the saw. In a further example, the saw handle can be adjustable by changing its length and the angle relative to the rest of the saw either separately by length or angle or simultaneously in length and angle.
- In another example of the apparatus and methods described herein, a concrete saw includes a handle having a free end spaced from the saw, whereby the spacing of the free end relative to the saw can be adjusted continuously, as opposed to discrete, pre-defined positions. For example, the length of the handle can be changed continuously over a range, and the angle of the handle relative to the saw can be changed continuously over a range. In one configuration, the handle position can be set with a relatively quick, single-motion device.
- In a further example of the apparatus and methods described herein, a concrete saw includes a handle having a free end spaced from the saw, an attachment portion spaced from the free end and a pivot portion between the free end and the attachment portion. In one configuration, the attachment portion is configured to allow the handle to pivot about the pivot portion through an arc.
- These and other aspects of the apparatus and methods described herein will be considered in more detail in conjunction with the drawings, a brief description of which follows.
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FIG. 1 is a side elevation view of a piece of equipment in the form of a concrete saw that can be positioned manually and that includes adjustable handles. -
FIG. 2 is a rear elevation view of the concrete saw ofFIG. 1 . -
FIG. 3 is an exploded view of a handle adjustment assembly for use with the saw ofFIG. 1 . -
FIG. 4 is a cross section of a schematic of another example of a handle adjustment assembly similar to that shown inFIG. 3 including a damping material. -
FIG. 5 is a vertical cross section of a portion of the handle adjustment assembly ofFIG. 3 showing the pivot area for the handle adjustment assembly. - The following specification taken in conjunction with the drawings sets forth the preferred embodiments of the present inventions in such a manner that any person skilled in the art can make and use the inventions. The embodiments of the inventions disclosed herein are the best modes contemplated by the inventor for carrying out the inventions in a commercial environment, although it should be understood that various modifications can be accomplished within the parameters of the present inventions.
- Apparatus and methods are described for equipment, for example concrete saws, that can be manually moved or positioned through use of one or more handles. Adjustable handles allow easier positioning of the saw and permits accommodation of the preferences of different operators. The handles are preferably adjustable in more than one dimension, including in the angular and the longitudinal directions.
- In one example of a saw, a concrete saw 20 (
FIGS. 1 and2 ) includes aframe 22 supported bywheels wheels FIG. 1 ). Details about the construction and configuration of a concrete saw are provided in the above-identified patents. - An
internal combustion engine 30 may be mounted to theframe 22 and may provide power both to rotate the saw blade 32 (shown schematically) and to operate, through a transmission, thedrive wheels 24 to propel the concrete saw. Theengine 30 includes a crank shaft (not shown) which drives a pulley around which is positioned a V-belt or drives another drive element for the saw blade and typically another belt for a transmission for driving thedrive wheels 24. - As shown in
FIG. 1 , theengine 30 is supported on theframe 22 generally forward of thedrive wheels 24. Theblade 32 is supported on the frame generally forward of theengine 30. Because the blade can often have a large diameter, for example greater than two feet, the saw blade is raised above the surface of the concrete by pushing thewheels 26 downward against the concrete surface, thereby raising theframe 22 relative to the concrete surface. As a result, the saw pivots around the common axis for thedrive wheels 24, and as theblade 32 is raised, handles 3 and 3A move down closer to the concrete surface. As the blade begins cutting in the concrete, the saw pivots back toward the concrete surface until the saw blade reaches the desired depth. Once the desired depth is reached, the saw can be advanced along the cut path. - In the example shown in
FIGS. 1 and2 , twohandles handles saw 20. However, thehandle 3 will be considered in more detail but it should be understood that similar comments apply with respect to the configuration, use and adjustability of thehandle 3A. - In the example of the saw shown in
FIGS. 1-3 , the saw handles are adjustable in height and in length or both. In one configuration, at least one and preferably both handles have handle adjustment assemblies including releasable height holding elements and also including releasable length holding elements. The holding elements are releasable to allow the handle positions to be adjusted. Each of the height and length holding elements are preferably configured to reliably hold the handle in the selected position until released for adjustment or storage. The handle adjustment assembly will be discussed in more detail further below. - The handle adjustment assembly, and therefore the
handle 3, is supported relative to the frame by the frame side plate. The portion of the frame that supports the handle adjustment assembly can take a number of configurations and have a number of functions, but theframe side plate 1 described herein will be the frame element in the present example used for supporting the handle, as described more fully herein. The frame side plate includes apivot support 34 and atravel support 36. In the present examples, the travel support is configured to include an arcuate opening or arcuate path, to accept arcuate movement of a portion of a handle adjustment described more fully below, and will be termed anarc support 36. However, the travel support can take a number of other configurations. Thepivot support 34 supports a pivot point or pivot portion for allowing the handle to pivot about thepivot support 34. Thearc support 36 supports a structure that allows a portion of thehandle 3 to move through an arc as defined by the configuration of thearc support 36. While thearc support 36 is shown as having a relatively uniform curvature, thesupport 36 can have other configurations other than a uniform arc while still allowing a portion of the handle to be adjustable relative to the saw. In the configuration shown inFIGS. 1-3 , thearc support 36 allows a portion of the handle to move through a relatively uniform arc. Thearc support 36 also preferably includes a surface or other material designated generally at 38 that allows the handle to be releasably fixed in position relative to theframe side plate 1. In the configuration shown inFIG. 3 , thesurface 38 is the material surface adjacent anarc opening 15, which surface may be formed, treated or otherwise configured to assist in securely holding the handle in the desired position along thearc opening 15. - The handle adjustment assembly 40 (
FIG. 3 ) is supported by the frame in theframe side plate 1, and supports thehandle 3. It allows the handle position to be adjusted relative to theframe side plate 1, and therefore relative to the rest of the saw. Thehandle adjustment assembly 40 includes apivot element 14, which may be a pin, a pin and sleeve, a swivel, pivot cylinder or pivot stud supported in the frame side plate so that the handle adjustment assembly is pivotable relative to the rest of the saw, and so that the handle height can be adjusted relative to the frame. In the present example, the pivot element is apivot pin 14 that extends to and preferably through an opening defining thepivot support 34 of the frame side plate, and is captured within the opening by a nut, fastener orother securement 12. Thepivot pin 14 supports thehandle adjustment assembly 40 in the frame and allows it to pivot relative to the frame. The pivot pin in the present examples when supported in the frame side plate is fixed vertically and horizontally, as viewed from the side of the saw, such as the view ofFIG. 1 , and only pivots. The handle preferably extends sufficiently close to theframe side plate 1 so as to have a relatively small side load on thepivot pin 14 when an operator pushes down or pulls up on the handle. Similarly, the length of thepivot pin 14 between its attachment point to the rest of the handle adjustment assembly and where thefastener 12 is applied is small, to reduce side loading on the pivot pin. - The
handle adjustment assembly 40 in the example shown inFIG. 3 also includes a travel element, which in the present example takes the form of a threadedpin 13. The travel element could also take the form of a bar, rod, or arc element for traveling in an arc within thearc support 36. Thepin 13 extends into the opening defined by thearc opening 15 and is captured therein to releasably support thehandle adjustment assembly 40 with the frame. In the configuration shown inFIG. 3 , the threadedpin 13 is held in the arc opening 15 by a releasable holdingelement 10. The holding element releasably holds the threaded pin against thesurface 38, and allows the handle height to be adjusted relative to the frame. The threadedpin 13 and thepivot pin 14 allow height adjustment of the handle relative to the frame of the saw. They provide a relatively strong support for the handle through theframe side wall 1 and thehandle adjustment assembly 40. - The threaded
pin 13 in the examples herein joins thehandle adjustment assembly 40 at a handle support 44 (described more fully below). The threadedpin 13 extends in the present examples substantially normal or perpendicular to the handle adjustment assembly and specifically to thehandle support 44, so that thepin 13 has anaxis 13A (FIG. 4 ) that is substantially perpendicular to the central axis 44A of thehandle support 44. Having theaxis 13A of the pin intersect or nearly intersect the handle support axis 44A reduces any tendency of a significant moment or bending load being created in the threadedpin 13 when an operator pushes down or pulls up on thehandle grip 9. - The releasable holding
element 10 may take the form of a clamp, retainer, fastener or other mechanism. In the examples described herein, the holding element will be referred to asclamp 10. Theclamp 10 may be a KIPP design adjustable handle Model No. 28061, or another locking handle that is preferably multiple position, instantly adjustable and lockable and releasable. A spacer or bearing element such aswasher 11 may be included to help releasably hold the threaded pin against thesurface 38 until it is released. - The configuration of the mechanism for releasably holding the threaded pin against the
surface 38 may take the form of a handle, clamp or other securement mechanism such as those that may be obtained from commercially available sources. Other possible mechanisms may include trigger ratchets, thumb knobs, and the like. The mechanism for releasably holding the threaded pin relative to the frame, and therefore selecting the arc or angle position of the handle relative to the rest of the saw, can be positioned as desired over an essentially infinite number of locations along a continuum over the defined range of motion, as defined by thearc opening 15. - The angular position of the handle need not be set at discrete or predefined positions. The use of a handle or clamp 10 such as that shown in
FIG. 3 allows for quick setting of the position of the handle, in this case the angular position of the handle. It also allows for setting of the position at a number of locations along the length of travel. - The
pivot pin 14 and the threadedpin 13 are preferably fixed relative to each other. Additionally, they are spaced apart from each other a sufficient distance to more evenly distribute over the handle adjustment assembly any loading created when an operator pushes down, pulls up on or otherwise moves the handle. In the example shown inFIGS. 1 and3 , thepivot pin 14 is located close to the rear of theframe side wall 1, and the threadedpin 13 is located close to the front of theframe side wall 1. Additionally, in the example ofFIG. 3 , the threadedpin 13 is located close to the far end of the handle adjustment assembly, remote from thehandle grip 9, to take advantage of any additional spacing that can be used between the pivoting portion of the handle adjustment assembly and the traveling portion of the handle adjustment assembly. - In the configuration shown in
FIG. 3 , the handle adjustment assembly includes a support element, and thepivot pin 14 and the threadedpin 13 are mounted to and form part of thesupport element 42. Thesupport element 42 in turn supports ahandle support 44 relative to the frame. It should be understood that thesupport element 42 and thehandle support 44 can be formed integral or monolithic with respect each other, or they can have a number of other configurations. The handle support is releasably held to the frame wall, and when the handle is held in the handle support, the handle is also releasably held relative to the frame wall. - The
handle support 44 is preferably fixed, such as by welding or other reliable means, to thesupport element 42. Thehandle support 44, if desired, may also include between the handle support and the support element 42 a damping material 45 (FIG. 4 ), in this example a cushion or other material such as rubber or foam, to absorb vibration, and the like. In the example shown inFIG. 5 , thehandle support 44 is fixed to thesupport element 42 without a damping element. Additionally, thesupport element 42 is configured so that thepivot pin 14 is received in an inside surface of the support element so that a head on the pivot pin rests in a recess or cavity so that the head of thepivot pin 14 is flush with thesupport element 42. A plate element may extend between the support element and theframe side wall 1, for example for additional support of the handle adjustment assembly in the frame. - The
handle support 44 preferably receives thehandle 3 and, along with other parts of thehandle adjustment assembly 40, allows the handle to be adjusted relative to the rest of the saw. With thehandle adjustment assembly 40, the handle can be adjusted in length and in the angle at which the handle extends relative to the saw (see thearrow 46 inFIG. 1 ). Thehandle adjustment assembly 40 can also be configured so as to allow the handle to be adjusted in ways other than the handle length and/or angle relative to the rest of the saw. - In the configuration shown in
FIG. 3 , thehandle support 44 is a tube, pipe, or other receptacle for receiving and supporting thehandle 3. Thehandle support 44 is a circular tube, but it should be understood that the support can take a number of different shapes, opening configurations and surface configurations, both internal and external. In the configuration shown inFIG. 5 , the inside surface of thehandle support 44 is complementary to the circular external surface configuration of thehandle 3. However, other surface combinations are possible. The dimensions of thehandle support 44 are preferably such as to reliably support the saw when the handles are used to raise, move and position the saw. Thehandle support 44 may be closed at the end oppositehandle 3. - The
handle adjustment assembly 40 may include areleasable locking mechanism 46 for locking thehandle 3 in a longitudinal position relative saw. Longitudinal positioning of the handle is preferably carried out independently of the positioning of the height of the handle. This can be done using separate locking mechanisms, such as those shown inFIG. 3 , spaced apart from each other, and also locking at different parts of the handle adjustment assembly. In the example shown inFIGS. 1-3 , the locking mechanism 46' releasably locks thehandle 3 to thehandle support 44. Also in the example shown inFIG. 3 , the locking mechanism 46' includes a lock ring orbushing 5 for receiving a threaded set screw orother fastener 4 for extending through an opening in thering 5 and a corresponding opening in thehandle support 44. Thefastener 4 bears against and holds thehandle 3 fixed relative to thehandle support 44. One or both of the openings can be threaded as desired to receive thefastener 4. The locking mechanism 46' provides for relatively easy release and locking of the handle within and relative to thehandle support 44. The configuration of the locking mechanism 46' allows positioning of the handle at many locations along a continuum relative to the handle support, and such positions need not be predefined or discrete, and it allows such positioning substantially independent of the height positioning of the handle. Likewise, height positioning of the handle by theclamp 10 can be done substantially independently of the length positioning of the handle. - The adjustment assembly also allows the handle angle to be more easily adjusted in more confined areas, as the handle need not be removed from the handle support to change the angle of the handle. Adjustment of a handle can be made independent of the movement or raised or lowered position of the saw itself, subject to the existence of any adjacent barriers such as walls, or the like.
- The
handle 3 is preferably a conventional handle bar and easily fits within and is removable from thehandle support 44. Thehandle 3 is formed and dimensioned so as to reliably allow an operator to move and position the saw as desired. Thehandle 3 includes ahandle grip 9 at afree end portion 48 of the handle. Thehandle adjustment assembly 40 permits the free end portion of the handle to be adjusted relative to the saw. The free end portion of the handle may be moved closer to or further away from the saw by sliding the handle into or out of thehandle support 44. The free end portion of the handle may be adjusted in its angle relative to the rest of the saw by pivoting thehandle adjustment assembly 40 about thepivot point 34. Thefree end portion 48 of the handle can be fixed in position by thelocking mechanism 46 and the threadedpin 13 in thearc opening 36. Other forms for supporting and releasably adjusting the position of the handle can be used. - The examples described allow adjustment of handle positions easily and quickly. The examples described have the pivot support spaced from the travel support, and in the example shown in
FIG. 3 , the pivot support is spaced longitudinally along thehandle adjustment assembly 40 from the travel support. Additionally, the releasable holdingelement 10 and thelocking mechanism 46 are spaced apart longitudinally of the handle. - Having thus described several exemplary implementations of the invention, it will be apparent that various alterations and modifications can be made without departing from the inventions or the concepts discussed herein. Such operations and modifications, though not expressly described above, are nonetheless intended and implied to be within the scope of the inventions. Accordingly, the foregoing description is intended to be illustrative only.
Claims (5)
- A concrete saw comprising:a frame (22);a motor (30) supported by the frame (22) and including a drive element;a concrete cutting blade (32) driven by the drive element and supported by the frame (22);a plurality of wheels (24,26) coupled to the frame (22) for supporting the frame (22) on a concrete surface (28);a handle (3, 3A) supported by the frame (22) and configured to extend rearward of a rear portion of the frame (22);a first releasable locking element (46) supported by the frame (22) for releasably holding the handle (3, 3A) at a constant length, wherein the locking element (46) includes a lock ring or bushing (5) for receiving a threaded set screw or other fastener (4) for extending through an opening in the ring or bushing (5) and a corresponding opening in a handle support (44), wherein the fastener (4) is configured to bear against and hold the handle (3) fixed relative to the handle support (44), so that the locking element (46) allows positioning of the handle (3) at many locations along a continuum relative to the handle support (44); anda second releasable locking element (10) supported by the frame (22) for releasably holding the handle (3, 3A) at a constant variable angle relative to the frame (22) wherein the second releasable locking element (10) is separate from the first releasable locking element (46), characterized in that the second releasable locking element (10) is a releasable clamp (10) coupled to a threaded pin (13), that is moveable in an arc opening (15) of the frame (22), thus forming an arc support (36) for allowing the constant variable angle to be made between the handle (3, 3A) and the frame (22) and the releasable clamp (10) clamps against a surface of the frame (22).
- The saw of claim 1 wherein the handle extends in a handle direction and wherein the first (46) and second (10) releasable locking elements are spaced apart from each other in a direction approximately parallel to the handle direction.
- The saw of claim 1 further including a handle support supporting the handle (3,3A) and wherein the first (46) and second (10) releasable locking elements are mounted to the handle support (44).
- The saw of claim 1 further including a handle support supporting the handle (3,3A) wherein the second releasable locking element (10) is mounted to the handle support (44) and wherein handle support (44) further includes a pivot element extending from the handle support (44) to a frame portion so that the handle support (44) pivots relative to the frame portion.
- The saw of claim 4 wherein the handle support includes a substantially tubular portion for receiving an end of the handle.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US58677204P | 2004-07-09 | 2004-07-09 | |
PCT/US2005/024058 WO2006017110A2 (en) | 2004-07-09 | 2005-07-07 | Concrete saw handle bars |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1773556A2 EP1773556A2 (en) | 2007-04-18 |
EP1773556A4 EP1773556A4 (en) | 2010-08-04 |
EP1773556B1 true EP1773556B1 (en) | 2015-05-06 |
Family
ID=35839720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05769024.0A Not-in-force EP1773556B1 (en) | 2004-07-09 | 2005-07-07 | Concrete saw handle bars |
Country Status (4)
Country | Link |
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US (1) | US7418959B2 (en) |
EP (1) | EP1773556B1 (en) |
JP (1) | JP2008505783A (en) |
WO (1) | WO2006017110A2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070163566A1 (en) * | 2006-01-14 | 2007-07-19 | Adam Johnson | Adjustable handle for a concrete saw |
US7704123B2 (en) * | 2007-04-11 | 2010-04-27 | Diamond Products, Limited | Handle assembly for a concrete saw |
US8881715B2 (en) * | 2011-07-11 | 2014-11-11 | Alan Brandt | Concrete saw |
CN110395004B (en) * | 2019-08-09 | 2021-05-28 | 南京溧水高新产业股权投资有限公司 | Coal slime forming machine for preventing resource waste in mining source |
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EP1213637A2 (en) * | 2000-12-07 | 2002-06-12 | Deere & Company | Control device |
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US6318351B1 (en) * | 1999-09-17 | 2001-11-20 | Bioart Longyear Company | Waste containment system for an abrading or cutting device |
-
2005
- 2005-07-07 US US11/176,753 patent/US7418959B2/en active Active
- 2005-07-07 EP EP05769024.0A patent/EP1773556B1/en not_active Not-in-force
- 2005-07-07 WO PCT/US2005/024058 patent/WO2006017110A2/en active Application Filing
- 2005-07-07 JP JP2007520489A patent/JP2008505783A/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1213637A2 (en) * | 2000-12-07 | 2002-06-12 | Deere & Company | Control device |
Also Published As
Publication number | Publication date |
---|---|
EP1773556A4 (en) | 2010-08-04 |
WO2006017110A2 (en) | 2006-02-16 |
WO2006017110A3 (en) | 2006-08-24 |
US7418959B2 (en) | 2008-09-02 |
JP2008505783A (en) | 2008-02-28 |
EP1773556A2 (en) | 2007-04-18 |
US20060005826A1 (en) | 2006-01-12 |
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